Inspired by method's theorycraft suggesting that Glyph of UB would be stronger than Glyph of SS (moderately) once we're all geared in our T8, I decided to run the same test in my current 10 man + 4pT7 gear using Kahorie’s DK Sim. The numbers in my subpar gear (and no double dipping Ghoul, if anyone cares) came out like this:
UB Glyph - DPS 5361
SS Glyph - DPS 5309
Out of curiosity I did a run with two glyphs, dropping SS and leaving only Dark Death and Ghoul.
Neither Glyph - DPS 5297
These were all 100 hours tests. I know this isn't a really conclusive time frame, but then again I'm not running a conclusive gear setup for most of the people on this board. I'm more just looking to bring up an idea and leave the hard conclusions to other people.
So I guess the question this prompts is "Is Glyph of Scourge Strike overrated (due to disease clipping and the new buffed PS) to the point that it's hardly a DPS increase compared to Unholy Blight even with current T7 gear setups?"
And to the poster above me: Still get Dirge, it's one of the best DPS talents for the exact same reason that T7 is such an amazing set bonus. If you're doing things right (maximize ever GCD, and when things go wrong resort to a priority over a hard rotation) you shouldn't be capping out on RP.
